2 h.p. evenrude

This may be a dumb question, but I have never had a small outboard, My other boat has a 150. But i just bought a 2 h.p. evenrude, 1972 or 73, for my small jon boat. it runs great but on sat. the pull cord broke. Is it just like replacing one on a lawn mower or is there anything else i need to be aware of? thanks for any info